Tortional spring toggle



Feb. 16; 1932. J, KARlTZKY 1,845,283

ToRT'IoNAL SPRING TOGGLE Filed oct. 11, 1929 ATTORNE' UNET D STA/.Tes

Ars-NT OFFICE;

JOHN KARITZKY, 0F GARWOOD, NEW' JERSEY, .ASSIGNOR T0 HENRY B. NEWHALLCOB- PORATION, OF GARWOOD, NEIV JERSEY, A'CBJPORATION 0F NEW JERSEYTORTIONAL srmnsf'rceetn i Application led October 11, 1929. Serial No.398,897'.

My invention relates to toggle bolts, which are well known in the trade,and more particularly to a tortional spring Vtoggle bolt wherein thespringof the toggle is obtained by subjecting the arms to tortional`strains when they are bent back 90 to permit their insertion in the holeof the support. p

My invention further relates to certain combinations, sub-combinations,articles of manufacture and details of construction, all of which willbemore fully hereinafter described and pointed out in the claims.

In the gures I have shownl one embodiment of my invention, `the sainereference numerals refer to similar parts of the several figures.

Fig. 1 is a side elevation, with the spring arms in their normalextended position;

Fig. -2 is a vertical section on line 2-2 of Fig. 1, looking down in thedirection of the arrows;

Fig. 3 is an enlarged detail fragmentary sectional view on line 3-3 ofFig. 2;

Fig. 4 is an enlarged sectional view on a horizontal plane taken throughthe pivot holes in the nut;

Fig. 5 is a front elevation of one of the spring arms;

Fig. 6 is a plan view looking down on one of the spring armsillustrating the angle of the fingers.

In the embodiment of my invention illus.-y

trated in the drawings 1 is a nut preferably though not necessarilyformed from stamped sheet metal and provided Vwith female screw threadsto cooperate with the threads upon stops preferably taper, being widestat 7 f and narrowest at 8.

Each flange is provided with two enlarged bearings 9--9 for thereception of the fingers 10-10 of the spring arms 11-11, the twobearings in each flange adapted to receive fingers 10 of differentspring arms 11, Figs. y p

` f tion of the flanges 3 and 4 to form the convex 1 and 2.

These spring arms are preferably formed 4freely of spring wire bent backon itself, the ends 'being bentr out and up at an angle to the legs 1212forming the lingers 10-10, one on each leg 12; f

The two fingers 10-10 of each spring arm are mounted in the enlargedbearings 9--9 in the flanges 3 and 4 ofthe nut as shown. Normally thearms rest in their extended position shown :in Figs. 1 and 2,eXerting nospring action. The spring action is due to placinga tortional strainupon the arms 11-11. Assuming that the bearing holes 9 9, are in thinmaterial, and 'thereforethe bearings are relatively short, and furtherassuming that the 'stops 5 and 6 are notvused, it will be clear fromFig. 4, that when the arms 11-11 are moved 90 from their dotted positionin Fig. 4, to the position shown infull lines, 'that the ends 13--13 ofthe lingers 10'10 will follow work being accomplished, and withoutplacing the arms under tension. If, however, a stop or jstops are placedwithin the yarcuate path of the ends 13-13 an entirely different resultis accomplished.

In that case when the ends 13--13 are stopped` or arrested, frommovingfreely in Ytheir arcuate paths by the stops, further Amovement ofthe arms 11-11 from the dotted position in Fig. 4 to the position infull lines, ywill place a tortional strain upon said arms 11-11, and,for the time being, makethem tortional spring arms readyl to fly back 90vas soon as the tortional vstrain is relieved y Stops to prevent thefree movment of the ends 18-13 of the lingers 10-10 in their arcuatepath may be variously formed. A thick nut may be employed so that thefingers 10-10'may assume, entirely within the enlarged hole in the nut,the angular position vshown in Fig. 4;

n Preferably, how Ver, the nut ispmade of relatively thin sheet metal,as is the nut in Fig. 4, so that the bearing holes 9-9 are hardly longenough to obtain the best tortional results.

It is for this reason that I press out a porstops 5 and 6'. It will beseen, by reference arcs of a circle without any useful is removed,

to the enlarged view of Fig. 4, that the ends 13-13 of the fingers10-10V are prevented from following their arcuate paths, which theywould normally follow as they are swung 900, by these stops 5 and 6.When the ends 18-13 engage the stops 5 and 6 the fingers will alsoengage the points -.15 of the bearing hole 9-9. Further movement of thearms 11 from their dotted position in F ig. 4c to the position shown infull lines, will place considerable tortion on the arms making themspring arms which will fly back into the position shown in Figs. l and2, as soon as the restraining influence, as for example the s urface ofthe hole in which they are mounted, permitting the bolt 2 to be screwedhome to support the work, not shown.

Preferably, though not necessarily, I'provide stops which, at differentpositions of the lingers, will vary the amount of tortion imparted tothe arms. F or example the stops to the arms 11, which will be less thanif the stops were of maximum width through their length. Arranging thestops in this manner insures that sutlicient tortion will be impartedVto the arms l1 to obtain the desired spring action, and yet notsufficient to reach the elastic limit of the material of which the armsll-lll are made. Such stops also permit easier rocking of the arms 11-11 1n their bearings 9 9. Y

Having thus described this invention in connection with an illustrativeembodiment thereof, to the details of which I do not desire to belimited, what is claimed as new and what is desired to secure by LettersPatent is set forth in the appended claims.

What I claim is 1. In a tortional spring toggle the combination ofpivoted arms and means to place them under tortion and means to vary thedegree of tortion imported in said arms.

2. The combination in a spring toggle of Y 1 a nut provided withenlarged bearing holes,

arms pivotally mounted in said holes, and means to place said arms undertortion when they are rocked in their bearings.

' 3. The combination in a spring toggle Vof a nut provided with enlargedbearing holes, each of said holes having a portion of its wall extendedto form stops, arms pivotally mounted in said holes and operate withsaid stops to place them under tortion.

adapted to 1 co- 4l.y A new article of manufacture for toggle boltscomprising a nut provided with enlarged bearing holes to pivotallysupport arms, each of said holes having a portion of its wall extendedto form stops engageable with said arms.

5f. A new article of manufacture for toggle bolts comprising a nutprovided with enlarged bearing holes to pivotally support arms, each ofsaid holes having a portion of its wall extended to form a tapered stop.

6. The combination in a toggle bolt of a nut provided'with enlargedbearings to receive the ends of spring arms, spring arms mounted in saidbearings and means to progressively place said arms under tortion whenthey are rocked in their bearings.

7 In a tortional spring toggle the combination of pivoted arms eachhaving an offset which is adapted to move in an arcuate path,

.and means to engage the oset to prevent the free movement of the offsetin its arcuate path.

8. In a tortional spring toggle the combination of integral springpivoted arms having offsets which are adapted to move in arcuate pathsand means to engage the offsets to prevent the free movement of theoffsets in their arcuate paths thereby subjecting the integral springarms to tortional strains `to store up energy which is released when thespring toggle' is located in position in ahole in a wall or othersupport.

JOHN KARITZKY.

